UNO Q and Nano R4 qwiic port does not support

Projects Programming
1

I found out that for UNO Q and Nano R4, the second qwiic port which is used for direct connect between Arduino board to sensor with straight qwiic cable does not work.
It looks Uno Q and Nano R4 library does not include "Wire1.h"
that is why I got the error message :
I am use Uno Q 0.51 and 0.52 both not working

need more help

C:\Users\simon\AppData\Local\Temp.arduinoIDE-unsaved2026019-12300-1c4e6yd.eu3q\Example1_Basic_Readings\Example1_Basic_Readings.ino:22:10: fatal error: Wire1.h: No such file or directory
22 | #include "Wire1.h"
| ^~~~~~~~~
compilation terminated.
exit status 1

Compilation error: Wire1.h: No such file or directory

2

Well, no, it doesn't. And it never has.

But including Wire.h gets you Wire and Wire1...

Looking at the library files yourself will save you all kinds of time.

3

I got a Q , have hooked up a Modulino Movement and Joystick, they both worked..

Only have to #include “Modulino.h” it does the rest..

I don’t see two ports either??

What you trying to plug in??

good luck.. ~q

4

Interesting,
All documents say Wire1.h thogh
I have try Wire.h, not working

5

Not in my experience.

"Not working" by itself is never a useful statement.

Good luck figuring out your issues, since you aren't provided any useful details for anyone else to help you.

6

Screenshot_2026-01-19_172930
Screenshot_2026-01-19_1729301600×2560 390 KB

Here is what example says
Screenshot_2026-01-19_174231
Screenshot_2026-01-19_1742311600×2560 374 KB

7

Hi @simonnanoc. Please tell us which exact sensor hardware you are using.

You chose the Official Hardware > Modulino forum category when you created this topic. That implies you are using one of the hardware products from the Arduino Modulino family:

However, I see that you said you are using a TMP102 breakout manufactured by SparkFun in your other topic:

pert 9

Even though @simonnanoc was not respectful enough to answer @ptillisch's question, I see from their later posts that they are indeed not using a Modulino product.

I moved your topic to an appropriate forum category @simonnanoc.

In the future, when creating a topic please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.

Although it was maybe somewhat reasonable to created a dedicated topic for the question about "Wire1.h", @simonnanoc then swung the discussion right over to the subject of their previous topic Arduino Nano R4 window compatible issue.

I merged that part of the discussion to Arduino Nano R4 window compatible issue

Since it has already been clearly explained that there is no such thing as "Wire1.h" and that you must use Wire.h even when you want to reference the Wire1 object, I will close this topic as resolved. For all further discussion of the other problems @simonnanoc is having using the Sparkfun TMP102 module, please use the original topic: Arduino Nano R4 window compatible issue